IgG is a type of immunoglobulin that activates complement and neutralizes a variety of toxins; positive IgG antibodies usually indicate a previous infection with a virus and are of limited use in clinical diagnosis. If there are obvious symptoms of discomfort, IgM antibody tests are required and are of high clinical diagnostic value for infectious diseases such as hepatitis A and mycoplasma pneumonia. If IgG antibodies are positive and IgM antibodies are negative, this usually indicates that the patient has had a previous infection with the pathogen but is recovering. If the patient has no obvious symptoms, no special treatment is usually necessary. You should pay attention to your daily diet, which should be high in protein, vitamins, and fiber, including fish, shrimp, eggs, carrots, oranges, broccoli, spinach, and other foods, and combined with regular review. If both IgM antibody and IgG antibody are positive, it indicates that the patient may have recent infection or recurrent infection, or there are obvious uncomfortable symptoms such as fever, loss of appetite, vomiting, jaundice, etc. Both need to clarify the type of infection and actively carry out treatment. According to the specific condition, comprehensive treatment such as antiviral and protection of body functions should be carried out to avoid aggravation of the disease.